9 trips to the shop - three different transmissions being rebuilt - SES light still came on within 20 minutes of picking up every time, and mileage sucked. Researched the issue on the web, and one of 2 solutions were found to cure it - Mr. Goodwrench factory rebuild, or a Jasper replacement. The tranny shop finally broke down & threw in a Mr. Goodwrench - PROBLEM SOLVED! Turn 2000 RPM's at 70, like my '94 Z26 did, and mileage is great! Shifts so smooth, you can't feel it.